Side bearing



May 2, 1933- G. s. CRAWFORD 1,906,843

S IDE BEARING Filed Aug. 29, 1931 2 Sheets-Sheet l i 21.*' i3 l jzz/yaoq mms: 6; @Pala/jordy @i WMZ@ gg May 2, 1933o G. s. QRAWF'QRD SIDE BEARING Filed Aug. 29, 1931 2 Sheets-Sheet 2 @am gf. i

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UNETEO 'rss GEORGE S. CRAWFORD, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

PETTIBONE IVIULLIKEN COMPANY, OF CHICAGO, ILLNOIS, A CORPORATION OF DELA- WARE SIDE BEARING Application filed August 29, 1931.

This invention relates toa novel and improved side bearing, and consists of the matters hereinafter described and more particularly pointed out in the appended claim.

The object of the invention is to produce a novel and improved form of side bearing including a roller casing and filler plate constructed and arranged for use with shims for adjustment of the filler plate with novel means for retaining the filler plates, all combined and arranged so that the parts may be easily locked together for purposes of shipment.

In the drawings Figure 1 is a view representing a top plan of the improved side bearing.

Figure 2 is a side elevation of the side bearing with parts shown in section.

Figure 3 is an end view of the side bear ing with parts shown in section. f

Figure 4 is a perspective view of a combined filler block and wear plate.

Figure 5 is a perspective view of a guard to be applied to the end of a casing.

1n the drawings: 10 indicates the casing; 11 indicates the filler plate which also constitutes the wear plate. 12 indicates the anti-friction roller, and 13, 13 indicate shims located below the filler plate,-it being understood, of course, that the casing and shims rest directly on the bolster.

The casing 10 is a hollow shell open top and bottom and provided with laterally extending apertured lugs 14, 14 at the base for attachment to the bolster by means of bolts or lag screws in a familiar manner. The casing has side walls 15, 15 and end walls 16, 17. In the side walls are formed ways or channels 18 in which travel short studs 19 on the ends of the roller and coaxial therewith. Said ways or channels extend in each direction from the middle of the casing a distance suficient to provide accommodation for the designed travel of the roller.

The combined wear plate and filler block 11 is loose in the casing and is of familiar form, in the main, having a wear surface 20 inclined in opposite directions from a transverse median line for the purpose of centering the roller and having transverse bottom Serial No. 560,101.

ribs 21', one at the middle and one at each end, which present bearings or rests for the filler block for supporting engagement against the bolster or the shims, interposed between said bolster and the said ribs.

At one end, the lefthand end, as shown in Figure 1, the combined wear plate and filler block has its end loosely engaged against the upright end wall 16 of the casing. Said end wall is provided with inwardly projecting pairs of vertically spaced horizontal lugs 22 to limit the movement of said -ller block. The other end of the filler block likewise engages loosely the upright end wall 17; but in addition, it is provided with a horizontally projecting tongue 23 at its middle which extends through a slot 233L in the said end wall. Part of the end wall 17 forming the top of said slot presents a shoulder 2 1 which together with the top set of lugs 22 on the end wall 16, act to limit the upward movement of the wear plate so as to prevent it from jamming the studs against the upper limits of the ways 18 in the side walls of the casing.

On the end wall 17 near the corners of the casing are formed vertically spaced apertured lugs 25, 25 in which are located pins 26, 26. Said pins'may be in any form of bolt with a head, which may be dropped in' through the apertures in the lugs and afterwards bent over at its bottom end, as shown, so as to lock the pins in position. On the two pins 26, there is mounted for vertical movement, a guard 27 having a horizontal bottom member 27a and upwardly and laterally extending arms 28 with apertured ears 29 engaged slidingly on the pins 26. Said guard 27 when in its lower position, bears on the bolster and its bottom member 27a acts. to retain. the shims 13 against horizontal displacement in the casing. Obviously also, when the roller and filler block are in place, this guard will lock all the parts in assembled relation for shipping purposes.

In the end wall 16 there is provided intermediate the side walls of the casing an opening 30, as more particularly shown in Figure 2, which is in width about onethird of the width of the casing and which opens through the plane of the bottom of said casing. This not only constitutes a cleaning opening, but in addition makes it possible to insert a chisel or other tool to be engaged against the ends of the shims 13 to dislodge and remove them, when desired. Y

The assembling of the bearing should be I obvious from the foregoing description. The anti-friction roller 12 is first inserted through the bottom in the usual manner to bring the studs to the level of the ways 18 in which it is desired to travel. Next the iiller block is inserted into the bottom of the casing anglewise until its end (the lei'thand end as shown in Figure 2) is brought into position between the vertically spaced pairs of lugs 22, 22. The other end or' the filler block is then raised to bring the filler block into a position approximating its natural position in the casing, this being made possible by reason of the slot 23 through which the tongue 23 extends. The guard 27 is then applied to the end of the casing with its ears 29 in alignment with the lugs 25, 25. The bolts 26 are then inserted through the lugs 25 and the ears 29 of the guard and the bolt ends bent over, as shown, to retain the guard in position where it is vertically movable on the bolts in the space between the ears 29. The bearing is now ready for shipment. lVhen applied in position on the truck one or more shims 13 are interposed between the ller block and the truck, the guard 27 being raised to permit the insertion of said shim.

When in the use of bearings, through wear and settling of the truck parts the clearance varies or changes from that designed and intended in the beginning, the construction of bearing herein described makes a take-up to counteract this wear veryreadily and easily made. It is simply necessary to raise the guard 27 and by a tool of some sort insert it at the opening 30 to drive out one or more of the shims 13 (if more clearance is to be provided) or insert other or additional shim plates if less clearance is to be provided. This is readily and quickly done without any necessity for riveting as is now generally the case with the construction of shim plates now in use.

I claim as my invention A casing for side bearings consisting of an elongated shell having side walls and end walls and open at top and bottom, each of said end walls having centrally disposed openings through their bottom edges, a liller block insertable into said shell from the bottom, said casing being provided with vertically spaced, inwardly extending lugs adjacent one end wall of said casing respectively above and below the position oocupied by the proximate end of said filler block, the other end of said filler block having a tongue extending through the opening in the proximate end wall of said shell, a yoke mounted to slide on the outside of the end wall last named, said yoke having a transverse member adapted to lock said filler block in assembled relation in said casing, shims insertable through the bottom end of said casing to be engaged by the bottom ot said filler block, said shims being held against horizontal displacement in said casing by said yoke, said yoke having upwardly and laterally extending arms provided with vertical apertures, vertically spaced apertured ears fixed on the end wall of said casing at each side in pairsin line with the apertures in said arms, and bolts taking through said lugs and said apertured arms retaining said yoke in position but permitting limited vertical movement thereof.

In testimony that I claim the foregoing as my invention I aiiix my signature this 1 day of August, A. D. 1931.

GEORGE S. CRAWFORD. 

